On the frictional destabilization of abyssal overflows dynamically coupled to internal gravity waves
Bibliographic record
Abstract
In the immediate vicinity of a sill, abyssal overflows can possess current speeds greater the local long internal gravity wave speed with bottom friction and downslope gravitational acceleration playing a dominant role in the dynamics. The transition to instability is described of supercritical frictional abyssal overflows on a super-inertial time scale (where rotation, and hence along slope motion, is secondary), but where there is dynamic coupling between the overflow and gravest-mode internal gravity waves in the overlying water column. It is shown that dynamical coupling with ambient internal gravity waves leads to a significant ‘up or blue spectrum’ shift in the frequencies, wavelengths and growth rates as compared to an instability theory without dynamical coupling. For oceanographically relevant parameter values, the most unstable mode has been found to have a wavelength of about 484 m, an e-folding amplification time of about 13 min, a geostationary period of about 17 min and propagates in a retrograde manner with a co-moving period of about 19 min.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".